Theoretical P-Wave Travel Times


Theoretical P-wave Travel Times

This map shows the predicted (theoretical) travel times, in minutes, of the compressional (P) wave from the earthquake location to points around the globe. The travel times are computed using the spherically-symmetric IASP91 reference earth velocity model. The heavy black lines shown are the approximate distances to the P-wave shadow zone (103 to 140 degrees).

Theoretical P-Wave Travel Times
City Distance
Travel Time
Arrival Time
Brisbane, Australia 20.25 4:33.5 2:50:41.5P
Wellington, New Zealand 31.52 6:20.0 2:52:28.0P
Agana, Guam 31.53 6:20.1 2:52:28.1P
Honolulu, Hawaii 48.27 8:38.8 2:54:46.8P
Tokyo, Japan 52.09 9:07.8 2:55:15.8P
Beijing, China 67.7410:55.4 2:57:03.4P
Anchorage, Alaska 79.9312:06.9 2:58:14.9P
San Francisco, California 82.9112:22.7 2:58:30.7P
Los Angeles, California 85.0012:33.3 2:58:41.3P
Kathmandu, Nepal 86.2112:39.3 2:58:47.3P
Seattle, Washington 86.3812:40.1 2:58:48.1P
Phoenix, Arizona 89.8212:56.5 2:59:04.5P
Palmer Station, Antarctica 94.1313:16.4 2:59:24.4P
Albuquerque, New Mexico 94.5613:18.3 2:59:26.3P
Golden, Colorado 96.4313:26.8 2:59:34.8P
Mexico City, Mexico 98.7013:37.0 2:59:45.0Pdiff
Brownsville, Texas 101.0713:47.5 2:59:55.5Pdiff
Wichita, Kansas 102.3213:53.0 3:00:01.0Pdiff
Duluth, Minnesota 106.3614:11.0 3:00:19.0Pdiff
St. Louis, Missouri 107.9314:17.9 3:00:25.9Pdiff
Knoxville, Tennessee 112.0514:36.2 3:00:44.2Pdiff
Lima, Peru 114.0714:45.2 3:00:53.2Pdiff
Miami, Florida 116.6414:56.6 3:01:04.6Pdiff
Ottawa, Canada 117.8715:02.0 3:01:10.0Pdiff
Washington, D.C. 118.1915:03.5 3:01:11.5Pdiff
Philadelphia, Pennsylvania 119.4415:09.0 3:01:17.0Pdiff
Moscow, Russia 119.4615:09.1 3:01:17.1Pdiff
New York, New York 120.1515:12.2 3:01:20.2Pdiff
Boston, Massachusetts 121.8915:19.9 3:01:27.9Pdiff
Bangor, Maine 122.7715:23.8 3:01:31.8Pdiff
Nairobi, Kenya 127.3415:44.1 3:01:52.1Pdiff
Bergen, Norway 128.2915:48.3 3:01:56.3Pdiff
San Juan, Puerto Rico 129.8115:55.1 3:02:03.1Pdiff
London, England 137.6816:30.0 3:02:38.0Pdiff
Rome, Italy 140.8916:44.2 3:02:52.2Pdiff

Travel Time Information and Calculator

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver